Comment 3 for bug 1362906

libgcc1 updates: libgcc1 had been in use in utopic and vivid without problems. It doesn't add any new functionality, no symbols are removed or added.

looking at the upstream changelog, changes only include bug fixes or slight enhancements. Attached are the changes which affect our release architectures:

2015-02-17 Sandra Loosemore <email address hidden>

        Backported from mainline
        2015-02-17 Sandra Loosemore <email address hidden>

        * config/arm/bpabi.S (test_div_by_zero): Make label names
        consistent between thumb2 and arm mode cases. Separate the
        signed comparison on the high word of the numerator from the
        unsigned comparison on the low word.
        * config/arm/bpabi-v6m.S (test_div_by_zero): Similarly separate
        signed comparison.

2015-02-01 H.J. Lu <email address hidden>

        Backported from mainline
        2015-01-24 H.J. Lu <email address hidden>

        * config/i386/cpuinfo.c (processor_subtypes): Add
        INTEL_COREI7_BROADWELL.
        (get_intel_cpu): Support new Silvermont, Haswell and Broadwell
        model numbers.

2014-09-18 Joseph Myers <email address hidden>

        * config/i386/sfp-machine.h (FP_TRAPPING_EXCEPTIONS): Treat clear
        bits not set bits as indicating trapping exceptions.

2014-08-04 Rohit <email address hidden>

        PR target/60102
        * config/rs6000/linux-unwind.h (ppc_fallback_frame_state): Update
        based on change in SPE high register numbers and 3 HTM registers.